mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-03 18:10:13 +00:00
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2015 Gooogle, Inc
|
||
|
|
* Written by Simon Glass <sjg@chromium.org>
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _ASM_SIPI_H
|
||
|
|
#define _ASM_SIPI_H
|
||
|
|
|
||
|
|
#define AP_DEFAULT_BASE 0x30000
|
||
|
|
#define AP_DEFAULT_SIZE 0x10000
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLER__
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct sipi_params_16bit - 16-bit SIPI entry-point parameters
|
||
|
|
*
|
||
|
|
* These are set up in the same space as the SIPI 16-bit code so that each AP
|
||
|
|
* can access the parameters when it boots.
|
||
|
|
*
|
||
|
|
* Each of these must be set up for the AP to boot, except @segment which is
|
||
|
|
* set in the assembly code.
|
||
|
|
*
|
||
|
|
* @ap_start: 32-bit SIPI entry point for U-Boot
|
||
|
|
* @segment: Code segment for U-Boot
|
||
|
|
* @pad: Padding (not used)
|
||
|
|
* @gdt_limit: U-Boot GDT limit (X86_GDT_SIZE - 1)
|
||
|
|
* @gdt: U-Boot GDT (gd->arch.gdt)
|
||
|
|
* @unused: Not used
|
||
|
|
*/
|
||
|
|
struct __packed sipi_params_16bit {
|
||
|
|
u32 ap_start;
|
||
|
|
u16 segment;
|
||
|
|
u16 pad;
|
||
|
|
u16 gdt_limit;
|
||
|
|
u32 gdt;
|
||
|
|
u16 unused;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct sipi_params - 32-bit SIP entry-point parameters
|
||
|
|
*
|
||
|
|
* These are used by the AP init code and must be set up before the APs start.
|
||
|
|
*
|
||
|
|
* The stack area extends down from @stack_top, with @stack_size allocated
|
||
|
|
* for each AP.
|
||
|
|
*
|
||
|
|
* @idt_ptr: Interrupt descriptor table pointer
|
||
|
|
* @stack_top: Top of the AP stack area
|
||
|
|
* @stack_size: Size of each AP's stack
|
||
|
|
* @microcode_lock: Used to ensure only one AP loads microcode at once
|
||
|
|
* 0xffffffff enables parallel loading.
|
||
|
|
* @microcode_ptr: Pointer to microcode, or 0 if none
|
||
|
|
* @msr_table_ptr: Pointer to saved MSRs, a list of struct saved_msr
|
||
|
|
* @msr_count: Number of saved MSRs
|
||
|
|
* @c_handler: C function to call once early init is complete
|
||
|
|
* @ap_count: Shared atomic value to allocate CPU indexes
|
||
|
|
*/
|
||
|
|
struct sipi_params {
|
||
|
|
u32 idt_ptr;
|
||
|
|
u32 stack_top;
|
||
|
|
u32 stack_size;
|
||
|
|
u32 microcode_lock;
|
||
|
|
u32 microcode_ptr;
|
||
|
|
u32 msr_table_ptr;
|
||
|
|
u32 msr_count;
|
||
|
|
u32 c_handler;
|
||
|
|
atomic_t ap_count;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* 16-bit AP entry point */
|
||
|
|
void ap_start16(void);
|
||
|
|
|
||
|
|
/* end of 16-bit code/data, marks the region to be copied to SIP vector */
|
||
|
|
void ap_start16_code_end(void);
|
||
|
|
|
||
|
|
/* 32-bit AP entry point */
|
||
|
|
void ap_start(void);
|
||
|
|
|
||
|
|
extern char sipi_params_16bit[];
|
||
|
|
extern char sipi_params[];
|
||
|
|
|
||
|
|
#endif /* __ASSEMBLER__ */
|
||
|
|
|
||
|
|
#endif
|